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Appendix A Troubleshooting
NI CVS-1450 Series User Manual A-4 ni.com
Cannot Drive Isolated Outputs
Verify that you have power connected to Viso and Ciso inputs on the
CVS-1450 device power connector and that the contact at the screw
terminals is solid. Because these outputs are electrically isolated from
the CVS-1450 device main supply, they require power in addition to the
CVS-1450 device main supply.
Runaway Startup Application
If a runaway startup application causes the CVS-1450 device to become
unresponsive, power off the CVS-1450 device and then restart it with either
the NO APP switch or the SAFE MODE switch in the ON position.
Restarting the CVS-1450 device with the NO APP switch enabled prevents
any VIs from running at startup. Restarting with the SAFE MODE switch
enabled starts the CVS-1450 device in Safe mode and does not launch the
embedded LabVIEW RT engine. Refer to the DIP Switches section of
Chapter 3, LEDs, DIP Switches, and Connectors, for more information
about these DIP switches.
System Displays a Missing Operating System Error at Startup
The CVS-1450 device was powered on or reset with all DIP switches in the
ON position. Set the DIP switches to the off position, and reset the
CVS-1450 device by pressing the RESET button for at least two seconds.
LED Error Indications
The CVS-1450 device indicates specific error conditions by flashing the
orange STATUS LED a specific number of times. Table A-1 describes the
STATUS LED flashing sequences and the corresponding error condition.